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Патент USA US3026667

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March 27, 1962
G. E. WILLIAMS ET AL
3,026,657
SLICING AND INTERLEAVING MACHINES
Filed May 9, 1958
5 Sheets~Sheet l
INVENTORS
GEOFFREY ERNEST WILLIAMS
WILLIAM THORNTON DOW
v
BY
TH El R ATTORNEYS
March 27, 1962
G. E. WILLIAMS ET AL
3,025,657
SLICING AND INTERLEAVING MACHINES
Filed May 9, 1958
' J’A
5 Sheets-Sheet 2
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,24 if” (4
I
I
INVENTORS
GEOFFREY ERNEST WILLIAMS
WILLIAM THORNTON DOW
THEIR ATTORNEYS
March 27, 1962
G. E. WILLIAMS ET AL
3,026,657
SLICING AND INTERLEAVING MACHINES
Filed May 9, 1958
5 Sheets-Sheet 3
1
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INVENTORS
GEOFFREY ERNEST WILLIAMS
WILLIAM THORNTON DOW
BY
W7
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\\
M
THEIR ATTORNEYS
March 27, 1962
G. E. WILLIAMS ET AL
3,026,657
SLICING AND INTERLEAVING MACHINES
Filed May 9, 1958
5 Sheets-Sheet 4
INVENTORS
GEOFFREY ERNEST WILLIAMS
WILLIAM THORNTON DOW
THEIR ATTORN EYS
March 27, 1962
G. E. WILLIAMS ET AL
3,026,657
SLICING AND INTERLEAVING MACHINES
Filed May 9, 1958
5 Sheets-Sheet 5
7103/ / ¢ a
INVENTORS
GEOFFREY ERNEST WILLIAMS
WILLIAM THORNTON DOW
THEIR ATTORNEYS
nite
?tent
3,@Z6,657
1' “
Patented Mar. 27, 1962
2
1
the cutting edge of the blade to the leading side of the
3,026,657
blade.
SLICING AND INTERLEAVING MACHINES
Geolfrey Ernest Williams, Little Neston, and William
Thornton Dow, Upton, England, assignors to Lever
Brothers Company, New York, N.Y., a corporation
of Maine
Filed May 9, 1958, Ser. No. 734,263
18 Claims. (Cl. 53-23)
'
The cutting edge of the blade is preferably rough,
The predetermined distance of advancement may be
equal to the desired thickness of each slice, although it
has been found preferable in some cases to have this pre
determined distance slightly greater than the desired slice
thickness in order to take account of the thickness of the
blade.
The invention also provides a method of slicing and
This invention relates to the slicing and interleaving 10
interleaving plastic substance in the form of a bar com
of plastic substances in the form of bars and especially
prising reciprocating a blade to cut a slice from the bar
to the slicing and interleaving of blocks of pu? pastry
and at the same time to insert in the cut interleaving sheet
margarine.
Putt pastry margarine is normally sold in bulk in the
material from a supply of the material, advancing the
form of ‘blocks. It would, however, be more convenient 15 bar past the blade so that at least part of the inserted
material adhering to the bar causes more of the material
to the user (i.e. the baker, if the blocks could be sup
to be drawn from the supply past the blade, and there
plied sliced.
after repeating the cycle of operations.
It is an object of the present invention to provide a
The invention further provides a method of slicing and
machine for cutting a block of puff pastry margarine into
slices and interleaving it with suitable sheet material so 20 interleaving plastic substance in the form of a bar com
prising cutting a slice from the bar and at the same time
that each slice is readily detachable from the adjacent
inserting in the cut an interleaf of interleaving sheet ma
slice.
terial from a supply of the material, advancing the bar
The present invention provides a machine for slicing
a predetermined distance, and then severing the inter
and interleaving a plastic substance in the form of a bar
leaf from the supply, and thereafter repeating the cycle
comprising support means ‘for supporting the bar, a re
of operations.
ciproca‘ole blade, advancing means for intermittently ad
The interleaf may be constituted by one layer or, alter
vancing the leading surface of the unsliced part of the
natively, by two discrete layers.
bar a predetermined distance past the blade, means for
The invention further provides a method of slicing and
reciprocating the blade after operation of the advancing
means to cut a slice from the unsliced part of the bar and 30 interleaving plastic substance in the form of a bar com
prising advancing the unsliced portion of the bar so that
to insert interleaving sheet material in the cut, severing
its leading face, which has a strip of interleaving ma
means for severing the interleaving sheet material after
terial adhering thereto, passes a ‘blade and draws more
operation of the advancing means but before the next
reciprocation of the blade, the operating part of the sever
or" the strip from a supply of the strip past the blade,
ing means being disposed on the leading side of the blade
and spaced therefrom by a distance not greater than the
severing the strip in a position between the leading face
of the unsliced portion and the blade, moving the blade
predetermined distance.
to cut a slice from the unsliced portion and to draw a
The severing means may comprise a cutter wheel,
means for rotating the cutter wheel, and means for mov
portion, and thereafter repeating the cycle of operations.
part of the strip from the supply into the cut, withdraw
When passing the blade in the direction of advance
ing the blade Whilst leaving said part of the strip in the
ment the trailing side of the blade is past before the
40 cut adhering to the new leading face of the unsliced
leading side.
The strip may comprise two distinct layers.
The bar may be in the form of a block or, alternatively,
ing the cutter wheel in a direction transverse to the direc
the bar may be continuously formed as it is advanced.
tion of advancement. The means for rotating and the
means for moving the cutter wheel are preferably such 45 The advantage of using a block is that the block can be
of a predetermined weight so that the sliced and inter
that during the severing operation the peripheral speed of
leaved block will then contain a predetermined weight of
the cutter wheel is greater than the speed of movement
plastic material.
of the axis of the wheel. The means ‘for moving the
The invention also provides a block comprising a plu
cutter wheel may comprise a lever on which the cutter
The means for rotating
rality of slices of plastic substance, any two adjacent
slices having two discrete ‘layers of interleaving sheet ma
terial between them.
Alternatively, the severing could be achieved by any
the invention has been found particularly useful when the
wheel is rotatably mounted, the lever being pivoted to
a radius arm which is pivotable in a plane transverse to
the direction of advancement.
The interleaving sheet material is preferably vegetable
the cutter wheel may comprise a drive wheel secured to
parchment although it may be cellophane, which may
the cutter wheel and a track for the drive wheel to roll
on. The drive wheel may be resiliently urged into en 55 conveniently be coloured so that tears are readily de
tectable, or any other suitable material.
'
gagement with the track during the severing operation.
The plastic substance may be edible fat, In practice
The drive wheel may be a pinion and the track a rack.
other suitable means such as a guillotine.
edible fat is puff pastry margarine.
In the case of a sliced and interleaved block of puif
The support means preferably comprises a movable 60
pas-‘try margarine in which each interleaf is constituted
platform and the advancing means can then be arranged
by a single sheet of vegetable parchment, each slice can
to advance the platform. The platform may ‘be com
be readily detached from the adjacent slice.
prised by an endless belt conveyor. Alternatively, the
In the case when each interleaf is constituted by two
support means may conveniently comprise a stationary
discrete sheets of vegetable parchment any two‘ adjacent
platform or a plurality of rotatable rollers.
slices of margarine can readily be separated with a sheet
Guide means may be provided for guiding interleav
ing sheet material towards the trailing side of the blade.
The guide means may conveniently comprise a rotatably
mounted roller urged towards the trailing side of the
blade. In use a strip of interleaving sheet material can
pass from a roll of the material, ‘between the guide means
roller and the trailing side of the blade, and then past
of the interleaf between them adhering to the adjacent
face of each slice. If a sheet of vegetable parchment has
been stuck on each end face of the sliced and interleaved
block then any two adjacent slices are readily separable
with a sheet of vegetable parchment adhering to each face
of each slice, the slices being separated without the neces
3,026,657
3
sity of tearing a sheet of parchment from either face of
either slice. The only separation that may be necessary
between margarine and parchment adhering thereto is
at the bottom of the interleaf where the bottom of one
sheet may be tucked over the bottom of the other sheet
due to the way in which the interleaf was inserted. This
arrangement not only permits the ready separation of
the slices but also provides the separated slices in a more
convenient and hygienic form for handling.
Preferred embodiments of the invention will now be
described with reference to the accompanying drawings
in which:
FIGURE 1 shows schematically an elevation of a
machine according to the invention being used with inter
leaving material constituted by a sheet of vegetable parch
ment,
4
FIGURES 1 and 2 show the machine being used with
a strip comprising a single sheet of vegetable parchment.
In FIGURE 2 the portion of the sheet tucked round the
leading side of the blade 7, as the blade descends, is
clearly shown. FIGURE 3 shows part of the sliced and
interleaved block when the strip 3 used comprised a single
sheet.
FIGURES 7 and 8 show the machine being used when
the strip 3 comprises two distinct sheets 3a, 3b of vege
10 table parchment, FIGURE 8 shOWing both sheets tucked
round the leading side of the blade 7 as the blade de
scends. FIGURE 9 shows part of the sliced and inter
leaved block when the strip 3 used comprised two dis
tinct sheets. In this case each interleaf is constituted by
two discrete layers 3a, 3b.
For the sake of clarity the width of the cut formed by
the blade in the margarine has been exaggerated in FIG
URES 2, 3, 8, and 9; in fact the clearance shown does not
through a block, the interleaving material being a sheet
exist. Also for clarity the gap between the two distinct
of vegetable parchment,
20 sheets 3a, 3b in FIGURES 7 and 8, and between the two
FIGURE 3 shows schematically a cross-section of a
discrete layers 3a, 3b in FIGURE 9 has been exag
part of the sliced and interleaved block of FIGURE 2,
gerated.
each interleaf comprising a sheet of vegetable parchment,
Although FIGURES 3 and 9 show each interleaf pass
FIGURE 4 shows a vertical cross-section of the ma
ing right through the block this result may not always be
chine shown in FIGURE 1,
25 obtained as the strip sometimes tends to slip relative to
FIGURE 5 shows a horizontal cross-section on a larger
the blade during insertion. In practice the blade, apart
scale of the machine on the line V—V, FIGURE 4,
from slicing the block, carries the strip a sufficient dis
FIGURE 6 shows a vertical cross-section on the same
tance into the ‘block to make the slices readily separable.
scale as FIGURE 4 of the machine on the line VI-VI
The tendency for relative slip is reduced by the slicing
of FIGURE 5,
30 edge, apart from being lblunt, being rough, and also by
FIGURE 7 shows schematically an elevation as in
using vegetable parchment as the interleaving material.
FIGURE 1 of the same machine being used with inter
The slicing edge can, for example, have been roughened
leaving material comprising two distinct sheets of vege
by a knurling tool. The tendency for relative slip can
table parchment,
be reduced still further by feeding the strip 3 to the
FIGURE 8 is a similar View to FIGURE 7 showing the 35 pressure roller 6 so that a take-up loop is provided be
FIGURE 2 shows schematically on an enlarged scale
the descent of the blade of the machine of FIGURE 1
machine being used with interleaving material compris~
ing two distinct sheets of vegetable parchment,
FIGURE 9 shows schematically a cross-section of part
of a sliced and interleaved block in which each interleaf
comprises two discrete sheets of vegetable parchment.
FIGURES 1 and 7 both show a block 1 of puff pastry
margarine, to be sliced and interleaved, supported on a
platform 2. The interleaving sheet material is fed in the
form of a strip 3 from a roll 4 via a guide roller 5 and
a pressure roller 6. The strip is pulled between the trail
ing side of a reciprocable slicer blade 7 and the pressure
roller 6, and then stuck to the leading face, i.e. the left
hand face in FIGURES l and 7, of the block 1. The
leading face of the block is then advanced a predeter
mined distance past the blade 7 drawing the strip with
it to the position shown in FIGURES 1 and 7. The
strip 3 is then severed by a rotary cutter 8, which is
rotated and simultaneously moved across the block in a
direction parallel to the plane of the blade,
Due to the fact that the rotary cutter is disposed a
small distance to the left of the slicer blade 7, a small
portionof the strip remains projecting beyond the slicing
edge of the blade. The blade 7 then descends and draws
with it more of the strip, that portion of the strip which
projected beyond the blade having become tucked round
the leading side of the blade during its descent. The
blade descends until it touches the platform and is then
retracted upwards. During the upward movement the
tween the roll 4 and the guide roller 5.
This can be
achieved vby rotating the roller 4 by external means.
The machine will now be described in greater detail
with reference to HGURES 4-6. The platform 2, which
40 is provided with a back rest 9 having studs 10, is slidably
mounted by means of blocks 11 on two runner bars 12
secured to the frame 13. A ratchet rack 14 is ?xed to the
under-side of platform 2. An air cylinder 15 is pivotally
mounted at 16 below the platform 2 to the frame 13. A
bolt 17, which is pivotally secured to the air cylinder 15
and passes through frame 13, is provided with a helical
spring 18. The piston rod of the air cylinder 15 termi
nates in a fork 19 provided with a pin 20.
The stroke
of the piston is twice that of the movement required. The
arrangement is such that the ?rst half of the outward
movement of the piston is free movement; the pin 20 then
engages the ratchet rack 14 so that the piston advances
the platform forward, i.e., to the left, during the second
half of its movement. During the second half of its
movement, the cylinder rotates slightly about pivot 16 in
an anti-clockwise direction.
The pin 20 is held in en
gagement with the ratchet rack by spring 18. The fork
is also provided with a trip bar 21 which is arranged to
actuate a pilot valve 22 when the piston rod is in its
extreme outward position.
As the pin 20 does not engage the ratchet rack 14 when
the piston rod is in its retracted position, means are
provided for locating the platform. For this purpose,
inserted part of the strip is prevented from being retracted
each block 11 contains a ball 23 which is urged by means
with the blade by its adherence to the margarine.
65 of a spring 24 into equi-spaced blind holes 25 in the
The platform is again advanced past the blade the
corresponding bar 12.
predetermined distance, which is equal to the desired
The blade 7, which consists of a 0.16 cm. stainless steel
thickness of one slice, the inserted part of the strip adher
plate, is secured in a frame 26 having wheels 27 which
ing to the leading face of the unsliced part of the block
project into two vertical guides 28 secured to vertical mem
causing more of the strip to be drawn past the blade 7. 70 bers 70 of a main frame. The cross member 29 of the
The severing operation is again performed to sever the
blade frame is attached to the piston rod ‘30 of an air
inserted part from the supply of the strip. The blade
cylinder 31. The cross member 29 is also provided with
thereupon again descends to slice and interleave the
a trip lever 32, which actuates an air valve 33 when the
block. The slicing and interleaving is continued until
blade is in its upper position and an air valve 34 when
the whole block is slicedandinterleaved.
75 the'rblade is in its lower position,
3,028,657‘
7.
means for intermittently advancing the leading face of
ing in the cut interleaving sheet material from a supply
of the material, causing relative displacement between
the bar and the blade to bring them to a position ready
for the next slice to ‘be cut, then severing the inserted
interleaving material from the supply at a point between
the ?rst-mentioned slice and the blade, and thereafter
the unsliced part of the bar a predetermined distance past
the blade, means for reciprocating the blade after opera
tion of the advancing means to cut a slice from the un
sliced portion of the bar and to insert interleaving sheet
material in the cut, a cutter wheel for severing the inter
leaving sheet material, the cutter Wheel being disposed
repeating the cycle of operations.
on the leading side of the blade and spaced therefrom
12. A method of slicing and interleaving plastic sub
by a distance not greater than the predetermined distance,
stance in the form of a bar comprising cutting a slice
a lever on which the cutter wheel is rotatably mounted, 10 from the bar with a blade and at the same time inserting
a radius arm pivotable in a plane transverse to the direc
in the out part of a strip of interleaving sheet material
tion of advancement, the lever being pivoted to the radius
from a supply of the material, the strip comprising two
arm, and means for rotating the cutter wheel.
unconnected layers, then causing relative displacement
5. A machine as claimed in claim 4 in which the means
between the bar and the blade to bring them to a posi
for rotating the cutter wheel comprises a drive Wheel 15 tion ready for the next slice to be out, then severing
secured to the cutter wheel and a track for the drive wheel
the inserted part of the strip from the supply at a point
to roll on.
between the ?rst-mentioned slice and the blade to form
6. A machine for slicing and interleaving plastic sub
an interleaf comprising two discrete layers, and there
stance in the form of a bar comprising a movable plat
after repeating the cycle of operations.
form for supporting the bar, a reciprocable blade, ad 20
13. A method of slicing and interleaving plastic sub
vancing means for intermittently advancing the platform
stance in the form of a bar comprising advancing the un
a predetermined distance past the blade, means for recipro
sliced portion of the bar so that its leading face, which
eating the blade after operation of the advancing means
has a strip of interleaving material adhering thereto, passes
to cut a slice from the unsliced portion of the bar and to
insert interleaving sheet material in the cut, severing
means for severing the interleaving sheet material after
operation of the advancing means but before the next
reciprocation of the blade, the operating part of the
severing means being disposed on the leading side of'
a blade and draws more of the strip from a supply
25
of the strip past the blade, severing the strip in a posi
tion between the leading face of the unsliced portion
and the blade, moving the blade to cut a slice from the
unsliced portion and to draw a part of the strip from
the supply into the cut, withdrawing the blade whilst
the blade and spaced therefrom by a distance not greater 30 leaving said part of the strip in the cut adhering to the
than the predetermined distance.
new leading face of the unsliced portion, and thereafter,
7. A machine as claimed in claim 6 having guide means
for guiding the interleaving sheet material towards the
trailing side of the blade.
8. A machine as claimed in claim 7 in which the guide
means comprises a rotatably mounted roller urged to
wards the trailing side of the blade.
9. A machine for slicing and interleaving plastic sub
repeating the cycle of operations.
14. A method of slicing and interleaving plastic sub
stance in the form of abar comprising advancing the
unsliced portion of the bar so that its leading face,
which has adhering thereto a strip constituted by two
distinct layers of interleaving sheet material, passes a
blade and draws more of the strip from a supply of
stance in the form of a bar comprising a movable plat
the strip past the blade, severing the strip in a position
form for supporting the bar, a reciprocable blade, ad 40 between the leading face of the unsliced portion and
vancing means for intermittently advancing the platform
the blade, moving the blade to cut a slice from the un
a predetermined distance past the blade, means for re
sliced portion and to draw a part of the strip from the
ciprocating‘the blade after operation of the advancing
supply into the cut, withdrawing the blade whilst leaving
means to cut a slice from the unsliced portion of the
said part of the strip in the cut adhering to the new
leading face of the unsliced portion, and thereafter re
bar and to insert interleaving sheet material in the cut,
a cutter wheel for severing the- interleaving sheet mate
rial, the cutter wheel being disposed on the leading side
peating the cycle of operations.
of the blade and spaced therefrom by a distance not
greater than the predetermined distance, means for ro
plastic substance comprising advancing the unsliced por
tating the cutter wheel, and means for moving the cutter
wheel in a direction transverse to the direction of ad
vancement to sever the interleaving sheet material after
15. A method of slicing and interleaving a block of
tion of the bar so that its leadingface, which has a strip
of interleaving material adhering thereto, passes a blade
and draws more of the strip from a supply of the strip
past the blade, severing the stripin a position between
operation of the advancing means but before the next
the leading face of the unsliced portion and the blade,
reciprocation of the blade.
moving the blade to cut a slice from the unsliced por
10. A machine for slicing and interleaving plastic sub
tion and to draw a part of the strip from the supply
stance in the form of a bar comprising a movable plat 55 into the cut, withdrawing the blade whilst leaving said
form for supporting the bar, a‘ reciprocable blade, ad
part of the strip in the cut adhering to the new leading
vancing means for intermittently advancing the platform
face of the unsliced portion, and thereafter repeating
a predetermined distance past the blade, means for recip
the cycle of operations.
rocating the blade after operation of the advancing means
16. A method of slicing and interleaving a block of
60
to cut a slice from the unsliced portion of the bar and
to insert interleaving sheet material in the cut, guide
means for guiding the interleaving sheet material towards
the trailing side of the blade, a cutter wheel for severing
the interleaving sheet material, the cutter wheel being
disposed on the leading side of the blade and spaced there
from by a distance not greater than the predetermined
distance, means for rotating the cutter wheel, and means
plastic substance comprising advancing the unsliced por
tion of the block so that its leading face, which has
adhering thereto a strip constituted by two distinct layers
of interleaving sheet material, passes a blade and draws
more of the strip from a supply of the strip past the
blade, severing the strip in a position between the leading
face of the unsliced portion and the blade, moving the
blade to cut a slice from the unsliced portion and to
for moving the cutter wheel in a direction transverse
draw a part of the strip from the supply into the cut,
to the direction of advancement to sever the interleaving 70 withdrawing the blade whilst leaving said part of the
sheet material after operation of the advancing means
strip in the cut adhering to the new leading face of the
but before the next reciprocation of the blade.
unsliced portion, and thereafter repeating the cycle of
11. A method of slicing and interleaving plastic sub
operations.
stance in the form of a bar comprising cutting a slice
17. A method of slicing and interleaving a block of
from the bar with a blade and at the same‘ time insert
edible fat comprising advancing the unsliced portion of
3,026,657”
5
end in HG. 6) of air cylinder 31, whereupon the blade
7 moves downwards. This releases pilot valve 33 which
causes air to be supplied to the front end of cylinder 15,
which thereupon will begin its return stroke. The plat
form is retained in- its position by the locating device. The
return stroke of the piston of cylinder 15 releases pilot
blade 7 in the direction of advancement of the platform
with the operating edge of the rotary cutter slighly below
the slicing edge of blade 7 when that blade is in its upper
position.
The brackets 39 also serve to secure a horizon
tal plate 40. The lever 36 is pivoted at 41 to a radius
arm 42 which pivots about pivot 43. A spring 44 having
one end attached to the radius arm and the other to an end
6
causes air to be supplied to the rear end (i.e. the upper
The rotary cutter 8 is secured to a spindle 35 which is
rotatably mounted in the forked end of a lever 36.
Spindle 35 has also secured to it a knurled bush 37 which
runs in a horizontal track 38 secured at its ends by brackets
39 to the vertical members 70 of the main frame. Thus
the rotary cutter is situated on the leading side of the
valve 22 which causes air to be supplied to the rear
end of cylinder 48 thereby returning the radius arm 42 to
10
its original position.
During its downward movement, the blade 7 nips the
strip between itself and the margarine and slices through
the margarine, drawing with it the strip which unrolls
from the roll 4. If desired, the pressure roller may be
of lever 36 maintains the knurled bush 37 in contact with
a strip '64 of rubber ?xed in the horizontal track 38. 15 held away from the blade 7, during the ?rst 1.27 cm. of
its downward movement by wedges (not shown) secured
The radius arm 42 is connected by a clamp 45 and pin
to the blade 7. Thereafter the roller nips the strip be
46 to the piston rod 47 of air cylinder 48. Air cylinder
48 is pivotally connected at 49 to a suitable frame mem
ber secured to the vertical member 70.
The roll 4 of the interleaving material in the form of a
strip 3 (the strip comprising either a single layer or two
tween itself and the blade and “rolls” the strip on to the
blade. The line joining the axis of pressure roller 6 and
its pivot makes an angle of about 60° to the vertical there
by causing the roller to exert pressure against the strip.
If desired a spring could be used instead of gravity.
distinct layers as previously described) is mounted on a
When the blade 7 has reached the end of its travel,
mandrel '50 supported in half bearings 51 secured to frame
pilot valve 34 is depressed causing air to be supplied to
member 52. The strip is guided round the guide roller 5,
the front end of cylinder 31 which thereupon returns the
which is also secured to the frame member 52, over the 25 blade 7 to its original, upper position. During the up
pressure roller 6, which is rotatably secured at each of its
ward movement of the blade 7, the strip remains sand
ends, to a lever 53 which is pivotally mounted in brackets
wiched between the slice and the remainder of the block.
54, and under plate 40.
The slice is prevented from ascending with the blade by
The process is set in motion by a hand control valve 55
plate 40, and the block by studs 10. If desired an angle
mounted below the platform 2. The spindle 56 of the 30 piece can be secured to the top of back rest 9 instead
control valve 55 has secured to it a control lever 57 and
of or in addition to the studs 10. On returning, pilot valve
a disc 58 having two square cut-out portions 59, 60 in its
33 is tripped and the cycle recommences, i.e. air is sup
periphery. When the valve 55 is in the “off” position, it
plied to the back end of the cylinder 15 and the platform
is locked in that position by means of a detent of bell
is advanced to the left, etc.
" crank 61, which engages in aperture 59; when the valve
The process is repeated until the whole block of mar
is in the “on” position, it is locked in that position by a
garine is sliced and interleaved, whereupon arm 65 ?xed
detent on a spring loaded pivoted lever 62 which engages
to block 11 trips pivoted lever 62. to release the disc 58.
in aperture 60.
Thereupon the valve 55 is urged to its “off” position by
In operation, the platform 2 is moved back to its ex
means of a spring (not shown).
treme right hand position. The block 1 of margarine is 40
The dimensions of the block of margarine were 30.5
then placed on the platform 2 and pushed against the
back rest ‘9. The strip 3 is then pulled downwards and
cm. x 19.1 cm. x 20.3 cm. and the block was so dis
lightly tapped against the leading face of the block to
lel to the 30.5 cm. x 19.1 cm. face into eight 2.54 cm.
which it adheres.
The free end of hell crank 61 is then depressed, there
by unlocking the disc 58. The control lever 57 is then
moved to the right to turn the spindle 56 clockwise (as
seen in FIG. 4) until the detent of the spring loaded lever
posed on platform 2 that it was sliced by the blade 7 paral
slices. The weight of the block was 12.7 kg. The cutter
wheel 8 was disposed 1.27 cm. from the blade 7.
We claim:
1. A machine for slicing and interleaving a plastic sub
stance in the form of a bar comprising support means for
62 engages in the cut-out portion 6% to lock the valve in
the “on” position. Air is thereupon admitted to the rear
of cylinder 15 pushing its piston forward to move the
platform to the left and thereby drawing the strip with
it due to its adherence to the leading face of the block.
supporting the bar, a reciprocable blade, advancing means
The displacement of the platform corresponds to the
55 blade after operation of the advancing means to cut a
desired thickness of one slice.
When the piston rod of cylinder 15 has reached its ex
treme outward position, trip bar 21 actuates pilot valve 22.
for intermittently causing relative displacement between
the bar and the blade so that the leading surface of the
unsliced part of the bar is moved a. predetermined distance
past one side of the blade, means for reciprocating the
slice from the unsliced part of the bar and to insert inter
leaving sheet material in the cut, severing means for
severing the interleaving sheet material after operation
This causes air to be supplied to the front end (i.e. the left
of the advancing means but before the next reciprocation
of the blade, the operating part of the severing means
moves to the right to rotate radius arm 42 counter-clock so being disposed on said one side of the blade and spaced
wise, thereby causing the rotary cutter 8 to sever the
therefrom by a distance not greater than the predeter—
strip 3 on or just above the upper face of the block.
mined distance.
end in FIG. 6) of air cylinder 48 whereupon its piston
The pressure roller 6, by clamping the strip against the
2. A machine as claimed in claim 1 in which the sever
blade helps to keep the strip in position during the cutting 65 ing means comprises a cutter wheel, means for rotating
the cutter wheel, and means for moving the cutter wheel
operation. It will be noted that due to the gearing effect
which takes place between the knurled bush 37 and the
in a direction transverse to the direction of advancement.
3. A machine as claimed in claim 2 in which the means
strip 64 in track 38, the peripheral speed of the rotary
for rotating and the means for moving the cutter wheel
cutter ‘8 is greater than the linear speed of spindle 35.
This facilitates the severing action. The rotary cutter is 70 are such that during the severing operation the peripheral
speed of the cutter wheel relative to its axis is greater
positioned from the blade 7 by a distance not greater than
the distance of advancement so leaving an amount of the
strip projecting beyond the blade.
When the radius arm reaches the end of its severing
than the speed of movement of its axis.
4. A machine for slicing and interleaving plastic sub
stance in the form of a bar comprising support means
stroke, it trips pilot valve 63. Tripping of pilot valve 613 75 for supporting the bar, a reciprocable blade, advancing
3,026,657
10
the block so that its leading face, which has a strip of
a slice from the unsliced portion and to draw a part of
vegetable parchment adhering thereto, passes a blade and
draws more of the strip from a supply of the strip past
the blade, severing the strip in a position between the
leading face of the unsliced portion and the blade, moving 5
the strip from the supply into the cut, withdrawing the
blade whilst leaving said part of the strip in the cut
adhering to the new leading face of the unsliced portion,
and thereafter repeating the cycle of operations,
the blade to cut a slice from the unsliced portion and
to draw a part of the strip from the supply into the cut,
withdrawing the blade whilst leaving said part of the strip
References Cited in the ?le of this patent
UNITED STATES PATENTS
in the cut adhering to the new leading face of the un
sliced portion, and thereafter repeating the cycle of
operations.
18. A method of slicing and interleaving a block of
edible fat comprising advancing the unsliced portion of
the block so that its leading face, which has adhering
thereto a strip comprising two distinct layers of vege
table parchment, passes a blade and draws more of the
strip from a supply of the strip past the blade, severing
the strip in a position between the leading face of the
unsliced portion and the blade, moving the blade to cut
15
1,503,355
1,592,793
1,596,514
Ekstrom et al. ________ __ July 29, 1924
Webster ______________ __ July 13, 1926
Anderson ____________ __ Aug. 17, 1926
1,975,936
2,023,122
2,497,203
2,509,450
2,813,798
2,845,763
Goodwin ______________ __ Oct. 9, 1934
Chandler _____________ __ Dec. 3, 1935
Bennett ______________ __ Feb. 14, 1950
Reed et al. __________ __ May 30, 1950
Toby ________________ __ Nov. 19, 1957
Wonsidler ____________ __ Aug. 5, 1958
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